You are given information on the prices of the following three $1000 face value bonds:

1. 1-year zero-coupon bond selling for $970

2. 2-year zero-coupon bond selling for $937

3. 3-year 4% coupon rate bond selling for $911

What's the 3-year spot rate? Enter your answer to 4 decimal places eg if your answer is 6.54% enter as 0.0654. If your answer is 6% enter as 0.0600